Lowering blood homocysteine with folic acid-based supplements: meta-analysis of randomised trials.

  • Clarke R
  • Collaboration H
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Abstract

The objective of this study was to determine the size of reduction in homocysteine concentrations produced by dietary supplementation with folic acid and with vitamins B12 or B6. Meta-analysis of individual data on 1114 people in 12 randomised controlled trials assessed the effects of folic acid-based supplements on blood homocysteine concentrations. Multivariate regression analysis was used to determine the effects on homocysteine concentration of different doses of folic acid and of the addition of vitamin B12 or B6. The results showed that the proportional and absolute reductions in blood homocysteine produced by folic acid supplements were greater at higher pre-treatment blood homocysteine concentrations (p

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Authors

  • R. Clarke

  • Homocysteine Lowering Trialists Collaboration

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